CN218004921U - High-voltage electrical structure of fuel cell - Google Patents
High-voltage electrical structure of fuel cell Download PDFInfo
- Publication number
- CN218004921U CN218004921U CN202220806688.2U CN202220806688U CN218004921U CN 218004921 U CN218004921 U CN 218004921U CN 202220806688 U CN202220806688 U CN 202220806688U CN 218004921 U CN218004921 U CN 218004921U
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- Prior art keywords
- copper bar
- fuel cell
- voltage
- pile
- galvanic pile
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- 239000000446 fuel Substances 0.000 title claims abstract description 51
- 229910052802 copper Inorganic materials 0.000 claims abstract description 67
- 239000010949 copper Substances 0.000 claims abstract description 67
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 66
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- Fuel Cell (AREA)
Abstract
The utility model discloses a high-voltage electrical structure of a fuel cell, which relates to the technical field of fuel cells and comprises a fuel cell stack (10), wherein pins are arranged on two sides of the fuel cell stack; a stack housing (11) wrapped outside the fuel cell stack (10); the galvanic pile copper bars (12) are arranged on two sides of the fuel cell pile (10) and are connected with the pins; the junction box (9) is fixedly arranged on the outer side of the stack shell (11); the high-voltage relay (5) is arranged in the junction box (9); one end of the pile soft copper bar (6) is connected with the pile copper bar (12), and the other end of the pile soft copper bar is connected with the high-voltage relay (5). The device provided by the utility model can reduce cost, high integration, and safe and reliable ground exports electric outward.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a fuel cell high-voltage electrical structure.
Background
The complete vehicle power matched with the hydrogen fuel cell generally needs to be provided with various subsystems such as a hydrogen supply system, an oxygen supply system, a cooling system, a low-voltage communication system, a high-voltage electrical system and the like, so that the purposes of simplifying a matched process and facilitating integrated design are achieved. The high-voltage electrical system adopts a common method at present to connect a high-voltage connector output by a galvanic pile through a cable, and then a branch is divided into two branches outside the system through a junction box, wherein the connection mode is 'galvanic pile high-voltage connector- > high-voltage wire harness- > junction box- > high-voltage wire harness', and the connection mode has the following problems: the method has simpler structure but low integration level; waterproof high-voltage connectors are needed for multiple times, so that the cost is not easy to control; and the junction box is connected with the electric pile through a wire harness, the vibration frequency of the junction box is inconsistent with that of the electric pile shell, the junction box is easy to loosen and fall off, a high-voltage contactor is not integrated, the safety problem is obvious, the application range is limited to a fuel cell pile module, and the junction box is not suitable for an unpackaged fuel cell pile (a bare pile).
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a fuel cell high voltage electricity structure can reduce cost, high integrated, and safe and reliable ground is electric to outside output.
In order to realize the purpose of the utility model, the technical scheme of the utility model is as follows:
a high-voltage electrical structure of a fuel cell comprises a fuel cell stack, wherein pins are arranged on two sides of the fuel cell stack; a stack housing wrapped outside the fuel cell stack; the electric pile copper bars are arranged on two sides of the fuel cell pile and connected with the pins; the junction box is fixedly arranged on the outer side of the galvanic pile shell, and a soft copper bar inlet and a high-voltage relay wiring harness inlet are formed in the connection part of the junction box and the galvanic pile shell; the high-voltage relay is arranged in the junction box, and the high-voltage relay controls the wiring harness to be led in through the wiring harness inlet of the high-voltage relay; one end of the pile soft copper bar is connected with the pile copper bar, and the other end of the pile soft copper bar penetrates through the inlet of the pile soft copper bar and is connected with the high-voltage relay.
Further, still include power touch core and stopper, wherein: the power supply contact core is arranged on the galvanic pile copper bar and is connected with the pin in a compression joint mode, and the power supply contact core can move axially along the pin; the limiting blocks are fixedly arranged on two sides of the fuel cell stack and arranged outside the galvanic pile copper bar and used for preventing the galvanic pile copper bar from moving, and the power supply contact core is separated from the pins.
Further, the power supply touch core comprises a threaded connection part and a cylinder which are respectively arranged at two ends of the power supply touch core, and a screwing part which is arranged in the middle of the power supply touch core, the power supply touch core is further provided with a touch core hole for being sleeved on the pin, and the pin can slide in the touch core hole along the axial direction.
Further, still include separated time copper bar and high-voltage connector, the separated time copper bar sets up in the separated time box, high-voltage connector one end sets up in the separated time box, one end sets up in addition outside the separated time box, high-voltage relay passes through the separated time copper bar and is connected with high-voltage connector.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model provides a device, the fixed setting of junction box is in the galvanic pile casing outside, and two tunnel high voltage relay of integration can not only improve the system integration degree by a wide margin, and can guarantee that junction box and galvanic pile casing vibration frequency are unanimous, reduces the safe risk that the vibration causes, effectively promotes anti vibration grade and IP grade. The fuel cell stack and the junction box are directly connected through the pile soft copper bar and the pile copper bar, so that cable connection is omitted, and safety risk and harness cost are reduced. The soft copper bar and the high-voltage relay wire harness enter the inlet design of the junction box, only three holes with enough space are needed to be formed in the connecting position of the junction box and the pile shell, namely the end plate of the pile shell, the requirement of IP67 grade does not need to be considered inside, the junction box and the pile shell are guaranteed to integrally reach the requirement of IP grade, and the design cost of the junction box and the purchase cost of a waterproof high-voltage connector are reduced.
Drawings
Fig. 1 is a schematic front view of a high-voltage electrical structure of a fuel cell according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a high-voltage electrical structure of a fuel cell according to an embodiment of the present invention.
Fig. 3 is the schematic view of the internal structure of the junction box casing according to the embodiment of the present invention.
Fig. 4 is a schematic diagram of an output end face structure of the electric pile of the embodiment of the present invention.
Fig. 5 is a schematic perspective view of a power supply contact core according to an embodiment of the present invention.
In the figure, 1-stack shell end plate, 2-high voltage connector, 3-branching copper bar, 4-fixing bolt, 5-high voltage relay, 6-stack soft copper bar, 7-soft copper bar inlet, 8-high voltage relay wiring harness inlet, 9-branching box, 10-fuel cell stack, 11-stack shell, 12-stack copper bar, 13-limiting block bolt, 14-limiting block, 15-power supply contact core, 151-connecting part, 152-column, 153-screwing part, 154-contact core hole and 16-copper bar fixing bolt.
Detailed Description
To explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Example one
As shown in fig. 1, 2, 3 and 4, a fuel cell high-voltage electrical connection structure includes:
two sides of the fuel cell stack 10 are provided with pins which are double-cylinder pins, and two pins are respectively arranged on two sides and used for outputting high voltage;
a stack casing 11 wrapped outside the fuel cell stack 10;
the galvanic pile copper bars 12 are arranged on two sides of the fuel cell pile 10, are connected with the pins, and are respectively arranged on each side;
junction box 9 is fixed to be set up 11 outsides of galvanic pile casing, and 11 one side of galvanic pile casing are provided with galvanic pile casing end plate 1, and junction box 9 and the whole integrated design of galvanic pile casing end plate 1, junction box 9 are fixed to be set up 11 outsides of galvanic pile casing can guarantee that both vibration frequency are unanimous, reduce the safety risk that the vibration causes. Be provided with two soft copper bar entries 7 and a high-voltage relay pencil entry 8 on the pile casing end plate 1, soft copper emits into the hole of 7 and high-voltage relay pencil entry 8, only needs the hole of opening three enough spaces on junction box 9 and the pile casing 11 position of being connected promptly pile casing end plate, and the inside IP67 grade requirement of need not to be considered guarantees that junction box 9 and pile casing 11 are whole to reach the IP grade demand can, subtracts junction box 9 design cost and waterproof high-voltage connector purchasing cost.
The high-voltage relay 5 is arranged in the junction box 9 and is provided with two high-voltage relays 5, and a control wire harness of the high-voltage relay 5 enters the junction box 9 through a high-voltage relay wire harness inlet 8;
pile soft copper bar 6, soft copper bar compliance is good, has certain elasticity, one end pass through copper bar fixing bolt 16 with pile copper bar 12 is connected, the other end pass through soft copper bar entry 7 with high-voltage relay 5 is connected, has two pile soft copper bars 6.
Each side galvanic pile copper bar 12 is respectively connected with the corresponding high-voltage relay 5 through a galvanic pile soft copper bar 6.
The principle of the utility model is as follows:
high-voltage electricity generated by the fuel cell stack 10 is conveyed to the stack copper bar 12 through pins on two sides of the stack copper bar, then conveyed to the high-voltage relay 5 through the stack soft copper bar 6, and finally output outwards through a subsequent electric pipeline of the high-voltage relay 5.
To sum up, the utility model provides a device, the fixed setting of junction box 9 is in the electric pile casing 11 outside, and two way high voltage relay of integration can not only improve the system integration degree by a wide margin, and can guarantee that junction box 9 and electric pile casing 11 vibration frequency are unanimous, reduce the safety risk that the vibration causes, effectively promote anti vibration grade and IP grade. The fuel cell stack 10 and the junction box 9 are directly connected through the galvanic pile soft copper bar 6 and the galvanic pile copper bar 12, so that cable connection is omitted, and safety risks and wiring harness cost are reduced. The inlet design that copper bar and high-voltage relay pencil got into junction box only need be in junction box 9 and 11 junction sites of galvanic pile casing open the hole in three enough spaces on the 11 end plates of galvanic pile casing, and IP67 grade requirement need not to be considered inside, guarantee that junction box 9 and galvanic pile casing 11 are whole to reach IP grade demand can, subtract junction box design cost and waterproof high-voltage connector purchasing cost.
As the preferred scheme, still include power supply touch core 15 and stopper 14, wherein:
the power supply contact core 15 is arranged on the pile copper bar 12 and is connected with the pins in a compression joint mode, and the power supply contact core 15 can move axially along the pins;
the limiting block 14 is fixedly arranged on two sides of the fuel cell stack 10 through a limiting block bolt 13, and is arranged on the outer side of the galvanic pile copper bar 12 and used for preventing the galvanic pile copper bar 12 from moving, and the power supply contact core 15 is separated from the pins.
When the fuel cell stack 10 works, the fuel cell stack 10 is expanded and deformed, the left side pile soft copper bar 6 is pulled, the right side pile soft copper bar 6 is pressed, the left pile copper bar 12 and the right pile copper bar 12 are respectively pushed to be close to the fuel cell stack 10, the distance for the pin to be sleeved in the contact core hole of the power contact core 15 is longer, so that the contact area of the power contact core 15 and the pin is increased, and the high-power large-current output of the fuel cell stack 10 during working is more facilitated.
When the fuel cell stack 10 does not work, the fuel cell stack 10 shrinks and returns to normal, and the stack copper bars 12 move towards the direction far away from the two sides of the fuel cell stack 10. At this time, the limiting block 4 limits the movement of the stack copper bar 12 to the two sides of the fuel cell stack 10, and ensures that the pins of the fuel cell stack 10 are continuously contacted with the power supply contact core 15. At this moment, the power output condition can be monitored at any time, and automatic on-off regulation is realized.
In summary, when the fuel cell stack 10 deforms, the pins of the fuel cell stack 10 can still be in good contact with the power supply contact core 15, so that the high-voltage electrical structure can adapt to the telescopic deformation of the fuel cell stack 10.
Preferably, as shown in fig. 5, the power supply contact core 15 includes a threaded connection portion 151 and a cylinder 152 at two ends thereof, respectively, the power supply contact core 15 is screwed onto the stack copper bar 12 through the threaded connection portion 151, and a screwing portion 153 in the middle, the screwing portion 153 can further fix the connection between the power supply contact core 15 and the stack copper bar 12, the power supply contact core 15 is further provided with a contact core hole 154 for being sleeved on the pin, and the pin can slide in the contact core hole 154 along the axial direction. As the preferred scheme, still include separated time copper bar 3 and high-voltage connector 2, separated time copper bar 3 passes through fixing bolt 4 and sets up in branch box 9, 2 one end settings of high-voltage connector are in branch box 9, and one end sets up outside branch box 9 in addition, high-voltage relay 5 is connected with high-voltage connector 2 through separated time copper bar 3. High-voltage connector 2 passes through two high-voltage relay 2 before external output, at this moment can control the electric power output condition at any time, and automatic on-off control, emergency accessible two high-voltage relay 2 cut-off system is connected with electrical apparatus high pressure, guarantee personnel and electrical apparatus safety.
Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the scope of the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. A fuel cell high voltage electrical structure, comprising:
the fuel cell stack (10) is provided with pins at two sides;
a stack housing (11) wrapped outside the fuel cell stack (10);
the galvanic pile copper bars (12) are arranged on two sides of the fuel cell pile (10) and are connected with the pins;
the junction box (9) is fixedly arranged on the outer side of the galvanic pile shell (11), and a soft copper bar inlet (7) and a high-voltage relay wire harness inlet (8) are arranged at the connecting part of the junction box (9) and the galvanic pile shell (11);
the high-voltage relay (5) is arranged in the junction box (9), and the high-voltage relay (5) controls a wiring harness to be led in through a wiring harness inlet (8) of the high-voltage relay;
one end of the galvanic pile soft copper bar (6) is connected with the galvanic pile copper bar (12), and the other end of the galvanic pile soft copper bar passes through the soft copper bar inlet (7) and is connected with the high-voltage relay (5).
2. The fuel cell high-voltage electrical structure according to claim 1, further comprising a power source contact core (15) and a stopper (14), wherein:
the power supply contact core (15) is arranged on the galvanic pile copper bar (12) and is connected with the pins in a compression joint mode, and the power supply contact core (15) can move along the axial direction of the pins;
the limiting blocks (14) are fixedly arranged on two sides of the fuel cell stack (10), and are arranged on the outer side of the galvanic pile copper bar (12) and used for preventing the galvanic pile copper bar (12) from moving, and the power supply contact core (15) is separated from the pins.
3. The fuel cell high-voltage electrical structure according to claim 2, wherein the power supply contact core (15) comprises a threaded connection portion (151) and a cylindrical body (152) at both ends thereof, respectively, and a screw portion (153) at the middle, the power supply contact core (15) is further provided with a contact core hole (154) for fitting over the pin, and the pin can slide axially in the contact core hole (154).
4. The fuel cell high-voltage electrical structure according to claim 1, further comprising a distributing copper bar (3) and a high-voltage connector (2), wherein the distributing copper bar (3) is arranged in the distributing box (9), one end of the high-voltage connector (2) is arranged in the distributing box (9), the other end of the high-voltage connector is arranged outside the distributing box (9), and the high-voltage relay (5) is connected with the high-voltage connector (2) through the distributing copper bar (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220806688.2U CN218004921U (en) | 2022-04-08 | 2022-04-08 | High-voltage electrical structure of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220806688.2U CN218004921U (en) | 2022-04-08 | 2022-04-08 | High-voltage electrical structure of fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218004921U true CN218004921U (en) | 2022-12-09 |
Family
ID=84287269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220806688.2U Active CN218004921U (en) | 2022-04-08 | 2022-04-08 | High-voltage electrical structure of fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218004921U (en) |
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2022
- 2022-04-08 CN CN202220806688.2U patent/CN218004921U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Yuchai Xingshunda New Energy Technology Co.,Ltd. Assignor: Yuchaixinlan New Energy Power Technology Co.,Ltd. Contract record no.: X2024980002254 Denomination of utility model: A high-voltage electrical structure for fuel cells Granted publication date: 20221209 License type: Common License Record date: 20240227 |
|
| EE01 | Entry into force of recordation of patent licensing contract |